[pure-silver] Re: D-Max with pyro

>I have found that a wash
>with Sodium Metaborate makes a big difference 

Others claim that an alkaline rinse like metaborate does nothing more
than increase the overall stain and contributes nothing to the image.
Since this stain is not formed during image formation I would tend to
agree with this comment.

-----Original Message-----
From: pure-silver-bounce@xxxxxxxxxxxxx
[mailto:pure-silver-bounce@xxxxxxxxxxxxx] On Behalf Of Bob Adler
Sent: Monday, December 12, 2005 12:24 PM
To: pure-silver@xxxxxxxxxxxxx
Subject: [pure-silver] Re: D-Max with pyro


Dear All,

I have just begun developing with PMK's pyro and am
very happy with the results. I have found that a wash
with Sodium Metaborate makes a big difference (did a
role with and a role without). This is analogous to a
developer post wash, I believe. Seems to really
increase the range and gradation of the final
negative, to my naked eye...

To change the topic slightly, I scan my negatives. If
any of you have experience scanning stained negatives,
the question I have is do you scan as a grayscale or
do you scan as RGB and then convert to grayscale (I
use the Photoshop channel mixer tool to tune the red,
green or blue channels when I normaly convert an RGB
file to grayscale)? Seems this discussion has stated
that with a densiometer different readings are
obtained from stained negatives because of different absorbtions of red,
green and blue from a regularly developed negative.

So again, my question as to whether it is better to
scan stained negatives as RGB and then convert or just
scan as grayscale. Opinions would be greatly
appreciated.
Thanks,
Bob

--- Eric Neilsen Photography
<eric@xxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:

> In my experience, that amount of stain will change
> depending on wash time,
> quality of water and several other factors. If
> you're sure all your
> variables are kept to a minimum the change in stain
> should reflect that.
> 
> I have used PMK, and Rollo, with and without using
> the developer as a post
> developing step; change pH.
> 
> Eric Neilsen Photography
> 4101 Commerce Street
> Suite 9
> Dallas, TX 75226
> http://e.neilsen.home.att.net http://ericneilsenphotography.com
>  
> 
> > -----Original Message-----
> > From: pure-silver-bounce@xxxxxxxxxxxxx
> [mailto:pure-silver-
> > bounce@xxxxxxxxxxxxx] On Behalf Of Jeffrey Thorns
> > Sent: Sunday, December 11, 2005 4:50 PM
> > To: pure-silver@xxxxxxxxxxxxx
> > Subject: [pure-silver] Re: D-Max with pyro
> > 
> > >Jeffrey Thorns wrote:
> > >
> > >>For those of you that use a pyro developer,
> > >>
> > >>Is it normal for the D-Max on a pyro-developed
> piece of film to be
> > >>noticably less than that with 'normal' developer
> on the same type
> > >>of film? (I don't have a densitometer, so I
> can't give you a
> > >>reading, but it is very noticeable, side by
> side.)
> > >>
> > >>When I look at the leader of film done in, say,
> Diafine, then at
> > >>the leader done in WD2D+, the density is
> noticeably less with the
> > >>pyro film. I've noticed that I have to print
> pyro negs with higher
> > >>contrast than non-pyro, but I understand that is
> somewhat
> > >>understandable, because pyro is a little
> softer-acting that a
> > >>normal developer. (?)
> > >>
> > >>
> > >
> > >Negatives developed in a staining Pyro developer
> will tend to look
> > >thinner than negatives developed in a standard
> developer.
> > >Densitometers don't work real well with Pyro negs
> anyway, as the
> > >stain is very complex.  The best way to tell if a
> Pyro neg is
> > >exposed/developed correctly is to make a print on
> you standard
> > >contrast printing paper.
> > 
> > Do you find that the amount of stain is not
> consistant?
> > 
> > What I mean is, it seems that, for the same type
> of film, some days
> > (batches of film) the stain seems stronger than
> other days.
> > Sometimes, there seems to be little stain at all.
> > 
> > It also seems to vary by film. I just did some
> Fuji Acros last night,
> > and I'm not sure I see any stain at all.
> > 
> >
>
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Bob Adler
Palo Alto, CA
http://www.raflexions.com
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